EP 1024372 A1 2000-08-02 - Device for position detection

Title (en)

Title (de)

Title (fr)

Publication

Application

Priority

DE 19903643 A 19990129

Abstract (en)

An acoustic signal guide (1) having a given sound propagation speed is arranged along the path of movement. A sound generator (5) on the object produces a clocked sound signal, which is coupled via a coupler (4) into the acoustic signal guide. The acoustic signal is coupled out of the guide at a decoupler (6) and evaluated in an evaluation unit (11) to determine the position of the object. A sensor (13) arranged at a distance from the center of the acoustic signal guide is operated when the object passes it, and is coupled to the evaluation unit (11) which performs error compensation for calibration points along the path based on an error polynomial.